#print输出不换行
print("<UNK>",end = '')
print("<UNK>\n",end = '')

#\t多行字符串对齐
print("hello\tworld")
print("hehe\taaaa",)

#九九乘法表
i = 1
while i <= 9:
    j = 1
    while j <= i:
        print(f"{j}*{i}={i*j}\t",end='')
        j += 1
    print()
    i = i + 1
print("你真nb",end = '')